Creating a flavored water garden in outdoor plant boxes is a delightful way to enjoy naturally infused beverages while enhancing your garden's beauty. Here are some of the best plants to grow for this purpose:

1. Mint – A classic choice, mint adds a refreshing twist to water and thrives in containers. Varieties like peppermint and spearmint are particularly flavorful.

2. Lemon Balm – This citrusy herb infuses water with a mild lemon flavor and is easy to grow in plant boxes.

3. Basil – Sweet or Thai basil adds a unique, aromatic touch to water and pairs well with fruits like strawberries.

4. Cucumber – While technically a vine, dwarf cucumber varieties can be grown in boxes, offering a crisp, hydrating flavor.

5. Lavender – A small amount of lavender adds a floral note, perfect for relaxing infused water.

These plants not only enhance your water but also attract pollinators, making your garden more vibrant. Ensure your plant boxes have good drainage and receive adequate sunlight for optimal growth. Happy gardening and hydrating!